How can it be a house of prayer for all people when Israel had exclusive right to it. They based this right on their worthiness. Gentiles could never be worthy enough to use this place of worship. But in Isaiah 56:6 in the middle verses of this chapter it tells us: “Also the sons of the stranger, that join themselves to the LORD, to serve him, and to love the name of the LORD, to be his servants, every one that keep the sabbath from polluting it, and take hold of my covenant; 7 Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for mine house shall be called an house of prayer for all people.” Now that is plain. It does not speak in riddles, and when connected to the Acts, the message is clear for all to see, even Israel. We can say: The Acts deals with the victory of the Truth of God over those who would steal the truth from God. They were prevented at every turn. The house of prayer existed until 70 AD and then was destroyed, to make the point that it is not only for Israel but all the world.